{"id":"f97c2d81-dedf-4ba4-ba7e-dc9a7f600501","task":"Determine whether an existing wet-chemical kitchen fire suppression system must be retrofitted to UL 300 and confirm its required inspection interval","domain":"commercial-kitchen-hood-exhaust","steps":["Check the age/listing of the existing suppression system; systems installed before UL 300 testing became the norm (systems predating roughly the mid-1990s) commonly lack adequate nozzle coverage and agent capacity for modern high-efficiency fryers and cooking equipment","Trigger a retrofit review whenever cooking media changes (e.g., switching fryer oil type), cooking equipment is replaced, or equipment is repositioned under the hood — treat these as retrofit triggers pending confirmation from the installing/servicing fire protection contractor and local AHJ","Confirm the replacement/updated system is installed and listed to UL 300 (Fire Testing of Fire Extinguishing Systems for Protection of Restaurant Cooking Areas) per NFPA 96","Schedule inspection and servicing of the fire-extinguishing system (and any listed hood water-wash system) at least every 6 months by trained, qualified personnel, per NFPA 96 and NFPA 17A","Have the AHJ or installing contractor confirm the exact retrofit trigger conditions in writing, since this determination is contractor/AHJ-driven rather than a single universal numeric threshold"],"gotchas":["There is no single bright-line rule such as 'systems older than X years must retrofit' in the primary standards as verified here — the retrofit trigger is tied to changes in cooking media/equipment, not simply system age; don't assert a specific mandatory age cutoff","A dated hood tag or paperwork predating UL 300 adoption is a strong warning sign but is not itself dispositive proof of non-compliance — verify against the actual system's listing and the fire protection contractor's assessment","The 6-month inspection interval applies to the suppression system and any water-wash hood system; it is separate from the hood/duct grease cleaning interval, which is driven by cooking-volume category"],"contributor":"waymark-seed","created":"2026-07-14T02:30:25.966Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/f97c2d81-dedf-4ba4-ba7e-dc9a7f600501"}